Plumbing system.



G. A. NILSON.

PLUMBING SYSTEM. I

APPLIOATION FILED NOV. 11, 1909.

' Patented May 23, 1911.

2 SHEETS-SHEET 1.

G. A. NILSON. PLUMBING SYSTEM.

APPLIOATION FILED NOV.11, 1909. 993,095, Patented May 23,1911.

2 SHEETS-SHEET 2.

9 N V n I,

w v a GUSTAF ALIBIN NILSON, OF CHICAGO, ILLINOIS.

PLUMBING SYSTEM.

To all whom it may concern:

Be it known that I, GUSTAF ALBIN NIL- son, a citizen of the United States, and resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Plumbing Systems, of which the {following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to plumbing systems for buildings, wherein provision is made for carrying away the waste from plumbing fixtures, such as sinks and like articles, for the escape of sewer gas at the top of the building, and for maintaining a water seal in the.

passages leading from the plumbing fixtures, whereby the escape of sewer gas into the building through such fixtures is prevented.

The invention contemplates waste and vent pipes, the latter being adapted for connection with a plumbing fixture at its foot, and being connected to the waste pipe intermediate its ends in order that a water seal may be maintained at the foot of the vent 1pc. p The object of the invention is to simplify and improve the construction of plumbing systems for buildings, and the invention is exemplified in the structure to be hereinafter described and illustrated in the accompan'ying drawings, wherein Figure 1 shows in side elevation a plumbing system embodying the invention and arranged for use in a building having a plurality of stories; Fig. 2 shows in front elevation the waste and vent pipes of the plumbing system illustrated in Fig. 1; Fig.

3 is a detail central section of the waste and ventpipes shown in Figs. 1 and 2; Fig. 4 is a front elevation of the waste and vent pipes showing a modified form of construction;

and, Figs. 5 and 6 are detail sectional views taken on. the lines 55 of Fig. 4 and 66 'of Fig. 2, respectively.

There is shown in the drawings a plumbing system embodying the invention, such as may be employed in a building of several stories in height, and having plumbing fix- Specifieation of Letters Patent.

Application filed November 11, 1909.

Patented May 23, 1911. Serial No. 527,525.

tures, as a sink, designated 10, 11 and 12, located in the rooms on each of the floors of the building. A waste pipe, generally designated by the numeral 13, adapted for connection with a sewer (not shown) at its foot, preferably extends vertically through a wall of the building and is open at its top, as above the roof of the building. A vent pipe, generally designated by the numeral 14, preferably extends parallel to the waste pipe 13 for the greater portion of its length, as from the lowest floor of the building at which a plumbing fixture, as the sink 10, is provided. Provision is made for the escape of sewer gas at the top of the vent pipe 14.

As shown, this is effected by connecting the vent pipe with the waste pipe 13 at a point above the level of the highest plumbin fixture in the building, as the sink 12. Ireferably, the waste pipe 13 and the vent pipe '14 are both made sectional, and the connection between them is made by forming the highest section, as 15, of the vent pipe, with an elbow 17 integral with a section 16 of the waste pipe 13.

In carrying out the invention the drain pipe leading from a plumbing fixture, as the pipe .18, leading from the sink 10, enters the vent pipe 14, as at 21, (Figs. 1 and 2), and provision is made for the passage of sewage from the vent pipe 14. into the waste pipe 13 at a higher level than the connection between the said drain pipe and the vent pipe, as by means of the connector 22 (Fig. 2). In order that similar connections may be made with plumbing fixtures located at higher levels than the sink 10, without obstructing the vent pipe 14, this vent pipe is provided with a plurality of branches, as 23, 24, each of which may have the drain pipe of a plumbing fixture, as one of the pipes 19, 20, leading from the sinks 11, 12, connected thereto at its foot. Each of the l'n'anches of the vent pipe, as 23, 24, is 0011- nected with the waste pipe 13 intermediate its ends, as at 25, 20.

Most desirably those sections, as 27, 28 and tegral. with the corresponding sections of the vent pipe, the section 27 of the waste pipe being,'i1s shown, cast in one piece with the lowermost section 25 of the rent pipe 14, and with the connector 22. Similarly the section 28 of the waste pipe 13 is cast in one piece with a section 30 of the vent pipe, the branch 23 of the vent pipe, and the connector The branch 24 of the vent pipe 14, as shown, leads directly to the elbow 17, and is east in one piece with thesaid elbow, the sections 15, 16 of the vent and waste pipes, respectively, and with the connector 26.

Preferably the lower end 21 of the vent pipe 14, and the lower ends, as 31, 32 of its branches, 23, 24, are each provided with a threaded socket, as 33, Fig. 6, for receiving a threaded elbow nipple 34, through which connection is made with the corresponding drain, as 19, by means of a union 35, such as is commonly employed for connecting sections of plumbing systems. The sections of the'waste pipe 13 and of the vent pipe 14 are shown as being formed of cast metal, the end of each of such sections being provided with the usual flange or bell, 36, for receiving the end of the next adjacent section, and for receiving the usual calking material 37, by means of which a tight joint is made. Preferably the flange 36 of the sections 27, 29 and 28, 30 of the waste and vent pipes, which are formed integral, as before described, are connected by a; web, as 3-8.

When the plumbing system herein described is employed, the drain pipes, as 18, 19 and 20 leading from the plumbing fixtures, as the sinks 10, 11 and 12, may be formed without the usual U-shaped traps, for if these plumbing fixtures be merely placed at a higher level than the corresponding connector, as 22, 25 and 26, between the vent pipe and the waste pipe, the drain pipe itself, and that part of the vent pipe 14, or its branches 23, 24, located'below the con nector, will serve for holding water to form a seal for preventing the escape of sewer gas through the fixture into the building.

In order that the waste from the sinks, as 11, 12, which are connected to branches, as 23, 24, of the vent pipe 14, may not flow into the main vent pipe should the waste pipe 13 or connectors 25, 26, become clogged, each of the branches, as 23, 24, extends to a higher level than that of any part of the corresponding plumbing fixture, before joining the main vent pipe, as most clearly shown at 39, Fig. 1.

\Vhen plumbing fixtures, as sinks 40, 41, are to be employed at each side of the waste and vent pipes, as 42, 43, Figs. 4 and 5, the vent pipe 43 is preferably provided with branches, as 44, which, as shown, are divided by a partition 45 for a portion of their length. The branch 44 has an outwardly directed threaded socket 46 at each side of the partition 45 for connection with the drain pipe 47 of the corresponding plumbing fixture. For the escape of waste received by the branch 44 of the vent pipe 43 at each side of the partition 45, into the waste pipe 42, the branch 44 has a divided laterally directed neck or nipple 48,, one part of which communicates with a part of the chamber of the body of the branch 44 and with the waste pipe 42 through a socket 49 provided at the side of the waste pipe for receiving the end of the nipple.

I claim as my invention:

1. In a plumbing system in combination, a main vent pipe, a waste pipe, a branch a sectional main vent pipe and a sectional waste pipe, a branch vent pipe extending downwardly from its union with the main vent pipe and having an opening at its lower end for receiving the drain from a sink or like fixture, and connection between the branch vent pipe and the waste pipe intermediate the ends of the branch vent pipe, the branch vent pipe and the said connection between the branch vent pipe and the waste pipe being formed integral with a section of the main vent pipe and a section of the waste pipe the walls of the branch vent .pipe being separated from the walls of the waste pipe and main vent pipe sections.

3. In a plumbing system in combination, vertical waste and vent pipes, an intermediate vertical pipe having walls separated from the walls of the said vertical waste and vent pipes and having an opening at its lower end for receiving the drain from a sink or like fixture, the connections between the intermediate pipe and the waste and vent pipes, the connection between the intermediate pipe and the waste pipe being at a lower level than the connection between the intermediate pipe and the vent pipe and at a higher level than the said opening in the intermediate pipe for receiving the drain from a sink or like fixture.

4. In a plumbing system in combination,

vertical waste and vent pipes having sep-' arate walls, connection between said pipes intermediate their ends, an elbow having a l rent pipe, tllltl a drain ltiltllllg' from a sink or like tixlnre to the elbow, no part of said 10 drain being at a lower level than the said elbow.

b'WlYtlttl emlneetion with the foot of the rent pipe. and a drain leading from a sink or like fixture to the elbow.

5. In a plumbing system in combination. vertical waste and vent pipes having separate walls, Connection between 'sa'ul pipes intermediate their ends, an elbow having. a swiveled connection with the foot of the (H STAF ALBIN NILSON. \Yitnesses CHARLES B. (,hnnsox, E. M. KLATcnnn. 

